Answer:
A. 4/8 cup flour for 2/3 batch.
Explanation:
By using the KCF (Keep, change, flip), we can use this to solve for A, B, C, and D to see what answer has the lowest fraction or lowest unit rate for flour per batch of muffins.
Thus, A is the answer since 3/4 is the smallest fraction/number out of all other answers.